LM4675SD NSC [National Semiconductor], LM4675SD Datasheet
LM4675SD
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LM4675SD Summary of contents
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LM4675 Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum General Description The LM4675 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A spread spectrum, filterless PWM architecture reduces EMI and eliminates ...
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Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit www.national.com 2 201827J3 ...
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... Contact NSC Sales Office for Availability micro SMD Marking T — Die Traceability G — Boomer Family H8 — LM4675TL 20182736 20182703 XY — Date Code TT — Die Traceability L4675 — LM4675SD 3 20182757 Top View X — Date Code LLP Marking 20182704 Top View Z — Plant Code ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (Note 1) Storage Temperature + 0.3V ≥ V ≥ GND - 0.3V Voltage at Any Input Pin ...
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Electrical Characteristics The following specifications apply for A apply for T = 25˚C. (Continued) A Symbol Parameter P Output Power O THD+N Total Harmonic Distortion + Noise Power Supply Rejection Ratio PSRR (Input Referred) SNR Signal to Noise Ratio Output ...
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Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified. Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, ...
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Typical Performance Characteristics THD + N vs Output Power f = 1kHz 8Ω L THD + N vs Frequency V = 2.5V 100mW OUT THD + N vs Frequency ...
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Typical Performance Characteristics THD + N vs Frequency V = 3.6V 100mW OUT Efficiency vs. Output Power R = 4Ω 1kHz L Power Dissipation vs. Output Power R = 4Ω 1kHz L ...
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Typical Performance Characteristics Output Power vs. Supply Voltage R = 4Ω 1kHz L PSRR vs. Frequency 200mV DD RIPPLE Supply Current vs. Supply Voltage No Load (Continued) Output Power vs. Supply Voltage 20182718 ...
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Typical Performance Characteristics Fixed Frequency FFT V = 3.6V DD www.national.com (Continued) Spread Spectrum FFT 20182732 3.6V DD 20182733 ...
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Application Information GENERAL AMPLIFIER FUNCTION The LM4675 features a filterless modulation scheme. The differential outputs of the device switch at 300kHz from V to GND. When there is no input signal applied, the two outputs (V 1 and V 2) ...
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Application Information shown as a typical value in the Electrical Characteristics Tables and in the Shutdown Hysteresis Voltage graphs found in the Typical Performance Characteristics section best to switch between ground and supply for minimum current usage while ...
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Application Information FIGURE 3. Differential Input Configuration with Input Capacitors (Continued) FIGURE 2. Differential Input Configuration 13 20182722 20182723 www.national.com ...
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Application Information www.national.com (Continued) FIGURE 4. Dual Differential Input Configuration FIGURE 5. Single-Ended Input Configuration 14 20182724 20182725 ...
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Application Information FIGURE 6. Dual Single-Ended Input Configuration FIGURE 7. Dual Input with a Single-Ended Input and a Differential Input (Continued) 15 20182726 20182727 www.national.com ...
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Application Information REFERENCE DESIGN BOARD SCHEMATIC In addition to the minimal parts required for the application circuit, a measurement filter is provided on the evaluation circuit board so that conventional audio measurements can be conveniently made without additional equipment. This ...
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Revision History Rev 1.0 Date 08/16/06 17 Description Initial WEB. www.national.com ...
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... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 9 Bump micro SMD Order Number LM4675TL NS Package Number TLA09AAA X1 = 1.514 X2 = 1.514 X3 = 0.600 LLP Order Number LM4675SD NS Package Number SDA08A 18 ...
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information ...